Mavala Scientifique Nail Hardener is a specialized 5ml nail treatment designed to strengthen and harden weak, brittle nails. This Swiss-formulated solution contains pro-keratin to improve nail structure and prevent breaking and splitting. This is a personal care product formulated specifically for nail treatment. The 5ml bottle contains a professional-grade nail hardening solution that helps reinforce natural nails. As a cosmetic/personal care product, detailed features are not listed for safety and regulatory compliance.